object position x not working - GameCreators Forum

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T4r4ntul4

14

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Joined: 1st Jan 2010

Location: close to my pc

Posted: 1st Feb 2010 22:25

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hi, i wanted to retrieve the X,Y and Z values of a object, only its not working. whats wrong with it? error says: object number illegal at line 635. i tried several things but its leading to nowhere...

next follows what on line 635 is:

+ Code Snippet

text 20,220,"blue x: "+str$(object position x(pick object(mousex(),mousey(),1,40000)))
text 20,240,"blue y: "+str$(object position y(pick object(mousex(),mousey(),1,40000)))
text 20,260,"blue z: "+str$(object position z(pick object(mousex(),mousey(),1,40000)))

whats wrong with it?

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KISTech

16

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Joined: 8th Feb 2008

Location: Aloha, Oregon

Posted: 2nd Feb 2010 00:07

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Hopefully this is inside an if statement that checks if you've clicked the mouse? Then there should be a check to make sure you've actually clicked on an object.

+ Code Snippet


if mouseclick() = 1
   o = pick object(mousex(), mousey(), 1, 40000)
   if o > 0
      text 20,220,"blue x:"+str$(object position x(o))
      ...
   endif
endif

If the code you posted were executed each loop, the object would only be a valid number if your mouse was always hovering over one.

Hope that helps.

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HowDo

21

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Joined: 28th Nov 2002

Location: United Kingdom

Posted: 2nd Feb 2010 00:12 Edited at: 2nd Feb 2010 00:14

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or try this

+ Code Snippet

if object position x(pick object(mousex(),mousey(),1,4000))<>0
text 20,220,"blue x: "+str$(object position x(pick object(mousex(),mousey(),1,40000)))
text 20,240,"blue y: "+str$(object position y(pick object(mousex(),mousey(),1,40000)))
text 20,260,"blue z: "+str$(object position z(pick object(mousex(),mousey(),1,40000)))
endif

or

+ Code Snippet

if pick object(mousex(),mousey(),1,4000)<>0
text 20,220,"blue x: "+str$(object position x(pick object(mousex(),mousey(),1,40000)))
text 20,240,"blue y: "+str$(object position y(pick object(mousex(),mousey(),1,40000)))
text 20,260,"blue z: "+str$(object position z(pick object(mousex(),mousey(),1,40000)))
endif

Dark Physics makes any hot drink go cold.

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T4r4ntul4

14

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Joined: 1st Jan 2010

Location: close to my pc

Posted: 2nd Feb 2010 12:22

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ty HowDo,

i needed to store the variables so i now use this:

+ Code Snippet

if pick object(mousex(),mousey(),1,4000)<>0
bluex = object position x(pick object(mousex(),mousey(),1,40000))
bluey = object position y(pick object(mousex(),mousey(),1,40000))
bluez = object position z(pick object(mousex(),mousey(),1,40000))
endif
text 20,220,"blue x: "+str$(bluex)
text 20,240,"blue y: "+str$(bluey)
text 20,260,"blue z: "+str$(bluez)

your first code snippet does not work, it gives a error. and i didnt know you must this use in a if statement...

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Neuro Fuzzy

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Joined: 11th Jun 2007

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Posted: 4th Feb 2010 07:01

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In case you don't realize why this was causing an error, the command "pick object" returns an integer that is the object number. It returns the object number OR zero if there is no object. Object zero doesn't exist, and it's considered an illegal object number, so when you say:

bluex = object position x(pick object(mousex(),mousey(),1,40000))

and the mouse isn't over any object (IE pick object returns 0), then that's like saying:

bluex = object position x(0)

which is illegal.

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T4r4ntul4

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Joined: 1st Jan 2010

Location: close to my pc

Posted: 4th Feb 2010 12:23

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ok ty neuro fuzzy that explanation helped me understand it alot.

*happy coding on his 3D Sandbox Editor*

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